Curved Display Protective Structure Uniformity

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Solution Overview

Problem

Conventional curved display devices face challenges in achieving uniformity in appearance due to complex structures, making subsequent processing difficult and resulting in lower quality.

Innovation Solution

A display device with a protective structure comprising a first and second protective layer, each with specific lengths and thicknesses, sandwiched between a display unit and adhesion layers, ensuring a flat side surface and improved uniformity through precise attachment and etching processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If a curved glass structure with decorative layer is used, then the display device achieves a modern curved appearance, but the complex structure makes subsequent printing and processing difficult, resulting in lower appearance uniformity quality

Engineering Contradiction:

Improvecurved appearanceVSAvoidappearance uniformity

Core Design Contradiction:

ShapeVSManufacturing precision

Solution Approach 1:

The protective structure is divided into multiple protective layers (first protective layer, second protective layer, third protective layer) with different functions. Each layer has specific thickness and material properties optimized for its role, allowing independent processing and quality control of each layer while maintaining the overall curved shape.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adhesion layers are pre-formed on the protective layers before final assembly. This preliminary preparation ensures proper bonding surfaces are ready in advance, facilitating easier and more precise attachment during assembly, thereby improving appearance uniformity while maintaining the curved structure.

Inventive Principle:

Principle #10Preliminary action

2Shape

If protective layers with different lengths are used, then edge differences can be controlled, but maintaining a continuous flat plane requires precise length matching between layers

Engineering Contradiction:

Improvecontinuous flat planeVSAvoidlength precision control

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

Different protective layers have different local properties including specific thicknesses and lengths tailored to their positions. The first protective layer has different dimensions than the second and third layers, with each layer's dimensions optimized for its specific location and function in the assembly.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The protective layers extend slightly beyond the display unit boundaries (excessive action) to ensure complete coverage and maintain the continuous flat plane appearance. The protruding portions are carefully controlled within 0-1mm to achieve the desired edge effect without creating visible gaps or misalignments.

Inventive Principle:

Principle #16Partial or excessive action

3Strength

If multiple adhesion layers are used to attach protective layers, then attachment strength is improved, but the processing complexity increases

Engineering Contradiction:

Improveattachment strengthVSAvoidprocessing complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

Multiple adhesion layers are combined in a systematic arrangement between the protective layers and display unit. The first adhesion layer attaches the first protective layer to the display unit, while the second adhesion layer attaches the second protective layer to the first protective layer, creating a unified multi-layer structure with enhanced overall attachment strength.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The adhesion layers serve as intermediary elements between the protective layers and the display unit, providing controlled bonding interfaces. These intermediary layers facilitate the attachment process by creating distinct bonding surfaces with optimized adhesive properties for each interface.

Inventive Principle:

Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution enhances the uniformity and quality of the display device's appearance by maintaining a continuous flat plane, minimizing edge differences between the protective layers, and preventing damage during processing.

Implementation Method 1

a first adhesion layer sandwiched between a display unit and a protective structure

Methodology Applied

Scientific EffectAdhesive bonding: Adhesive

Data Source

PatentUS10823901B2Display device and methods for forming the same

Publication Date: 2020.11.03 INNOLUX CORP

AI summary

A display device having a display region and a peripheral region surrounding the display region is provided. The display device includes a first adhesion layer sandwiched between a display unit and a protective structure. The protective structure includes a first protective layer having a first length in a first direction. The protective structure also includes a second adhesion layer disposed on the first protective layer. The protective structure further includes a second protective layer disposed on the second adhesion layer, and the second protective layer has a second length in the first direction, wherein the difference between the first length and the second length is between 0 and 1 mm, and wherein the second protective layer is on the outermost side of the display device.